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US 2022/0175432 A1Published application
Bone screw
AssigneeIndustrial Technology Research Institute
InventorsHsin-Hsin SHEN, Pei-I TSAI, Kuo-Yi YANG, Fang-Jie JANG, An-Li CHEN, Shih-Ping LIN, Chih-Chieh HUANG, Yi-Hung WEN, Wei-Lun FAN, Shin-I HUANG
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Abstract
A bone screw includes an external screw thread, an internal supporter structure and a porous layer. The internal supporter structure is inside the external screw thread. The internal supporter structure includes a screw thread supporter or a polygonal wall supporter. The porous layer is on a surface of the internal supporter structure. Therefore, the bone screw has an increased strength and also provides postoperative healing effect.
Claims11
A bone screw, comprising:
- an external screw thread;
- an internal supporter structure disposed inside a middle part of the external screw thread, wherein the internal supporter structure comprises one of a screw thread supporter and a polygonal wall supporter;
- and
- a porous layer disposed on a surface of the internal supporter structure.
1 more element
A bone screw, comprising:
- an external screw thread;
- and
- an internal supporter structure disposed inside a middle part of the external screw thread, wherein the internal supporter structure is a polygonal wall supporter having apertures.
Dependencies are inferred from the claim text.